| 项目编号: | 1351303
|
| 项目名称: | CAREER: Geophysical Flow control |
| 作者: | Michele Guala
|
| 承担单位: | University of Minnesota-Twin Cities
|
| 批准年: | 2013
|
| 开始日期: | 2014-09-01
|
| 结束日期: | 2019-08-31
|
| 资助金额: | USD408180
|
| 资助来源: | US-NSF
|
| 项目类别: | Standard Grant
|
| 国家: | US
|
| 语种: | 英语
|
| 特色学科分类: | Engineering - Chemical, Bioengineering, Environmental, and Transport Systems
|
| 英文关键词: | turbulent flow
; geophysical flow control
; flow
; remotely-controlled experiment
; flow-surface interaction
; turbulent wall-bounded flow
; flow control
; passive/active flow control
; flow control concept
; flow control approach
; specific flow
; flow instability
; career project
; many geophysical flow
|
| 英文摘要: | PI: Guala, Michelle
Proposal Number: 1351303
The focus of this CAREER project is to use concepts from passive/active flow control from the field of aerodynamics in order to control flow-surface interactions at the geophysical scale. The large characteristic scales of natural landscapes are found to overlap with the very large scale structures of the turbulent flow that continuously reshape the confining landscape (such as flow of rivers, ocean streams, or wind). The PI proposes to explore the relationship between the large scales of turbulent flows and the evolution of an erodible topography, and then to use this knowledge along with flow control concepts to shape natural topography, introducing the concept of Geophysical Flow Control (GFC).
Intellectual Merit:
Flow control has been extensively used in aeronautics to control laminar to turbulent flow transition on airfoils, or to alter the structure of turbulent boundary layers through perturbations of the boundary conditions. In many geophysical flows, the observed large scale patterns result from flow instabilities somewhat different from those governing turbulent wall-bounded flows. The PI proposes to extend the flow control approach to the case of meandering flows in natural or built environments, aiming at achieving specific flow or topographic patterns. By identifying the intrinsic instabilities of a natural dynamical system and by understanding their governing mechanism one can selectively dampen these instabilities and control their effects. Geophysical flow control will be validated through specific benchmark experiments.
Broader Impacts:
Successful completion of the project will enable the control of the formation and evolution of meandering patterns affecting the economy of entire communities in coastal or fluvial environments. Fundamental knowledge generated through this project can affect river and estuarine restoration projects, as well as the process of harnessing energy in river flows with the deployment of marine hydrokinetic turbines at the appropriate locations.
The educational plan is to construct a movable GFC demonstration model that can be used, for example, at the Minnesota Stare Fair or in K-12 tours. It also includes the establishment of an open competition for a remotely-controlled experiment and a virtual field experiment. The ongoing outreach activities at St. Anthony Falls Laboratory at the University of Minnesota will be utilized to bring exposure of the educational activities of the project to students and the public. |
| 资源类型: | 项目
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/95540
|
| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
|
|
There are no files associated with this item.
|
| Recommended Citation: | |
Michele Guala. CAREER: Geophysical Flow control. 2013-01-01.
|
|
|